Time — Online tools

Use these free web tools directly in your browser, with no signup.

Use these online time tools to measure, convert, or organize durations directly in your browser. This category brings together practical tools for starting a timer, using a stopwatch, adding several durations, converting hours, minutes, and seconds, or calculating a time value without doing the math manually.

Countdown timer

Start a countdown with presets, progress and a visual alert.

Duration adder

Add durations and get the total automatically.

Duration converter

Convert seconds, minutes, hours and durations with days.

Duration divider

Divide a duration into equal parts.

Duration multiplier

Multiply a duration by a number of repetitions.

End time calculator

Calculate an end time from a start time and a duration.

Hourglass timer

A visual hourglass for quick countdowns.

Simple timer

Quickly set a duration and start a visual timer.

Start time calculator

Calculate a start time from an end time and a duration.

Stopwatch

Measure elapsed time with start, pause, resume and laps.

Time between two times

Calculate the duration between two times in HH:MM:SS format.

Visual alarm

Set a visual alarm for a specific time.

About these tools

AppErgo’s time tools are designed for quick everyday use: preparing a work session, following a break, timing an activity, estimating an end time, or checking the interval between two times. Results are displayed clearly so they can be used immediately.

This category focuses on direct interfaces, with no account required and no unnecessary steps. Calculations run in the browser, making these tools suitable for both occasional needs and regular routines related to work, study, meetings, or personal organization.